Quote:
Originally Posted by scottj23
It's only because I went with a Stillen supercharger. Stillen advises to use the O.E.M. cats, they said other aftermarket cats cannot be used.
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Ok, let's clear the air, you can use any brand cat. The recommend OEM because they can take much higher heat than any HFC... That said, you can run cat-less, Stillen doesn't recommend this for a bad reason, they say you'll lose boost; this is a half truth, you'll lose boost pressure, but I doubt you'll lose noticeable power. And why run with extra boost just so you see your gauge read a few PSI higher for no good gain?
That said, running without cats smells like death, if you want to run HFCs you should run a custom setup with your HFCs welded in further down your exhaust. FI welds HFCs into the "y-pipe"